Improvement in stove-grate bars



G. W. GARDNER.

' Stove Grate.

No. 8,523. v r I "Patented Nov; .18, 1851-.

p r UNITED ST TE PATENT ()F-FICE.

. f r qnone e w. JYGARDNER, OF ALBANY, NEW BK;

v IMPRQYIEMQENT [N1 sTOv RArEeARsQ- v Specification.forrning part of'laetteisBatent No. 8,523, dated Novembei-flS, 185 1.

To aZZ whdpgjt'may-oortcerhl: I 1

Be a knofw'n'that GEORGE w. GARDNER,

' of the, city and coiint-yof Albany, and'State of New Yorlghave" in'vented new. and" useful Improvements 1n. the Construction of Stove Fire-Grates; and I dohereby declare that the.

following is a'full, clear, and exact description of the'constructionandoperationof the samef reference being had to the annexed drawings,

making apart of this specification, in which i j Figure 1 1s a perspective View of theframathe bars being removed. Fig, 2 is a ;top view of the grate, and' Fig. 3 a vertical section in the line w a: of Fig.2, as placed in. the ;rtrechamber of ,the stove. Fig. 4 is ,a top view,

5*M7emm1 Side one of the grate-bars b. a a. 7

which ends are circular andare placedclose together, as represented in dotted lines.- The V shortbars c c are placed in like manner in the-grooves of the end frame-bars ,C C and cross-bars E E. The frontbarAot' the frameis made shorter "than the back bar B; inl pro portion to the amount of motion to be. given to tho-grate.

The-shaker-bar F is placed in the loops'd cl and vibrated, giving the whole of the frame and bars exceptingthe back bar a horizontalmotion. The object of the bars 0 0 being .arranged longitudinally with the motion is so as that the coal my not catch upon (as it would upon the harsh-b); against the plate 6 and'obstruct the motion of the grate. The

barsb b, c c, and E E .are all placed loosely intothe frame and re'tained in their respective positions by their 'round ends, whichalso fallow them to move freely against each other, and each bar is freeito expand and contract without'binding orobstruction. .the bars I) b are fluted, and the raised parts The tops of are placed opposite the hollow in the'next succeeding bar forthe purpose of more effectually stirring the coal in the motion of the rate.

Having thus described my construction of fire-grate, what I claim as new, and desire to secure by Letters Patent, isr a The manner described of forming separate grate-bars for vibrating grates, rounded at their endsfsecured, and working in grooves of the frame, as described.

GEORGE W. GARDNER.

. Witnesses:

E. L. BRUNDAGE, P. P. STEWART. 

